Fixed-knife smoothing-planer.



.PATENTED Nov. 24,1903.. G. c. STUART.

FIXED- KNIFE SMOOTHING PLANER.

AIPLIATION FILED DEO. 2, 1902.

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yPATENTED NOV. 24, 1903.

` c. o. STUART. FIXED KNIFE SMOOTHING PLANER.

APPLIQA-TION FILED DBO. Z, 1902.

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Pnl-ENT OFFICE.

CHARLES C. STUART, OF CAMPVILLE, CONNECTICUT.

FIXED-KNIFE sMooTHl-Nc-PLANER.

SPECIFICATION forming part of Letters Patent No. 745,260, datedNovember24, 1903.

Application filed December 2, 1902. Serial No. 138,534. (No modela v acontinuous cut. The machine does the work heretofore done by the handsmoothing-plane, which for fine work is necessary in order to remove thehollows and ridges left upon the surface by planing-machines withrotating cutters. Means are provided in this machine for graduating thecut to a very fine degree, to controlling the feed-pressure `byelasticfaced rollers, to prevent any marring of iinelyfinished surfaces,and to delicately present the work to the cutter, which removes a verythin continuous shaving, toy regulate .and vary the position of thefeed-rolls relative to the cutting-knife for varying thicknessesofstock, automatic means to release the feed when meeting an obstruction,means to out up the continuous shaving after it leaves the knife, andother improvements which will be set forth in the specification.

The invention is illustrated in the accompanying drawings, in which likeparts are designated by similar reference characters, and wherein-Figure 1 is a side elevation. Fig. 2 is a plan or top view. Fig. 3 is anenlarged detail of the'pressure-links. Fig. 4 is a section on line `X X,Fig. 3. Fig. 5 is a section on line Y Y, Fig. 3. Fig. 6 is across-section of the machine on line S S, Figs. 1, 2. Fig. 7 is asection on line Z Z, Fig. 2.

knife-throat and the adjustable throat-plate. Fig. 9 is a section online V V, Fig. 8. Fig. 10 is an enlarged side view of the knife. Fig.`v

Fig. 8 is a` partial view of the table-top, showing the.

slotted holes 8 in the stands. Lugs 9 depend from the stands over theouter edges of the table and are tapped for screws 10, which are securedfrom end movement in lugs 11, formed on the table. By this means thefeedrollers are adjusted longitudinally to their proper'relativeposition to the knife-edge. The stands have sleeves 12 13, formingbearings for a pivotal driving-shaft 14 ,and also for a feed-rollswing-frame 15. The frame 15 has at its center, on each side, bearings16 17, carrying shaft 18, on which are secured a seriesof independentfeed-rolls 19 2O 21, the rolls being provided with yielding bands orfaces 22, such as rubber or like material, and adjustablylocated abovethe knife. On the inner end of shaft 18 is a gearA 23, engaging a pinion24 on shaft 14. At the same end of shaft 14 there is a tight pulley 25and a loose pulley 2G, on which is placed the belt to drive the machine.At the inner or opposite end of shaft 14 is a pulley 27, Vcarrying abelt 28, which runs over idler pulleys 29 30 to a pulley 31 on shaft 32,supported in bearings 33 under table 4.

Arotary shaving-cutter is secured to shaft 32 and comprises heads 34, towhich are secured spiral knives 35 36 37 to cut up the long shavings asthey pass from the fixed knife 38 and rotating against a knife 39,secured to the table 4, the cutter and knife being located in the directpath of the escaping shavings, which they divide intoshort sections. Asthey leave the knife in long ribbons, they pass naturally to the'knifeand cutter without the necessity of any guiding means. TheA VXed knifeis secured to anangle-plate 40 of a removable block 41,- which isarranged to tral top part of table 4. Tap-bolt 43 secures the knife andits cap 44, while screws 45 secure the cap to the knife. A ledge 46 `isformed on plate 40 and has adjusting-screws The knife, being thusadjusted very finely, is then securely clamped by the tapbolt 43 and theusual clips at the ends of the knife. (Not shown.) To still furtherprovide '-for ne adjustments of the knife to do its work, a throat-plate49 extends across table 4 in block 41 and beyond the block at one endand is tapered on its lower side 50, and at its thickest and overhangingend a lug 51 IOO passes down by the table edge, and a screw 52, passingthrough the lug and into the block, is the means employed to move plate52 in end and by its taper raise or lower its upper surface, which isparallel to the knife-edge, to adjust the depth of the out. The platewhen adjusted is secured from movement by screws 53 54.

The feed-rolls 19 2O 2l must be adj usted as to height to feed stock ofdifferent thicknesses. The feed-roll frame l5, being pivoted on shaft14, its opposite end must be raised or lowered to raise and lower thefeed-rolls for the purpose of sufficient grip for feeding in the stockand also for yielding to thick or thin places 1n the stock andobstructions, and means provlded to secure their position. For suchpurpose a shaft 55 passes through bosses 56 of the frame and extendingbeyond the frame at each end enters a box 57, inserted in the upper endof an adjustinglink 58, having screws 59 above and below the box for itsadjustment. Links 5S pass down by the side of table 4, which has a shaft60 passing across within it and extending beyond its sides and throughslots (il in the links. On shaft GO are pinions 62, engaging racks 63,formed on the links, so that as the pinions are rotated the links,swing-frame, and feed-rolls are moved up or down. Shaft 60 has a head 64at its farther end bearing against the hub of the outer pinion, and onthe near end of the shaft is aV screw-thread 65, on which is ahand-wheel 66, bearing against the adjacent pinion-hub, so that by meansof the shaft-head and handwheel the pinions areforced to the linksandthe links to the sides of the table 4, clamping all fast when the rollsare properly adjusted. Shaft 60 and its pinions are rotated by meansplaced upon the square part 67. It is sometimes desirable to have therolls automatically adjustable to inequalities in thickness of stock orto pass an obstruction without forcing it to the surface of the stocksuiiiciently to mar it. For such purpose a knee 68 is secured to thelink 5S in manner for its vertical adjustment and security after adjustment. The knee when secured and in its The weight holds the linksdown, but permits them also to raise when it is overcome.

The feed-rolls are made in separable Wheels instead of one, as it ismore practical to secure their covering, and in case one roll becomesmore worn than another-as, say, the middle one--on account of feedingmuch narrow stock they may be interohanged, thus greatly prolongingtheir use before requiring new covers.

I claiml. In a xed-knife planing-machine, a table having a removablecutting-knife stationary within a removable block therein, a series ofresilient-faced feed-rolls in a frame pivotally supported upon ahorizontally adjustable shaft at one end, and upon verticallyadjustablelinks at the opposite end, means to adjust the links and thereby therolls and frame vertically, driving means upon thehorizontally-adjustable shaft aforesaid, connected to means on thefeed-roll shaft for driving the feed-rolls at a different speed.

2. In a iixed-kni fe planing-machine, a table, a removable knifeblockseated therein and wherein the knife is adjustably supported, a seriesof soft-faced feed-rolls supported above the knife upon a framepivotally supported at one end upon horizontally-adjustable brackets,and upon vertically-adjustable links at the opposite end, means upon thelinks to limit the downward movement of the frame, without restrictingits upward movement.

3. In a fixed-knife planing-machine, a table, a knife removably securedin the table, multiple resilient faced feed rolls supported above theknife on a frame which is pivotally supported at one end on-the tableaforesaid, a shaft extending across the opposite end of the pivotedframe, boxes upon the shaft and adjustably supported in links, a shaftacross the table below its top and extending beyond the table sides,means upon the shaft to elevate and depress the links, and thereby thefeed-rolls and their pivotal frame, and means to clamp and hold thelinks when adjusted.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES C. STUART.

Witnesses:

R. C. WRIGHT, WILLIAM O. Sronvnn.

